The collision was witnessed by the children's father and their 14-year-old brother, who were travelling in a separate car, police have confirmed.

Emergency services were called to the A361 at 8.25am yesterday following a two vehicle collision, which involved a white Kia Sportage travelling towards Barnstaple and a lorry traveling in the opposite direction.

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Police say they father and 14-year-old boy, who were travelling in a different vehicle, were not directly involved in the incident.

The road was closed for nine hours while officers from Exeter Serious Collision Investigation Unit examined the scene and ask anyone who with information to contact police by email on 101@dc.police.uk or call 101 quoting 0125 of the 31 July.